February 3, 1993: An executive order prohibits a federal government official from using public office for private gain.

President George H. W. Bush signs Executive Order 12674 on April 12, 1989. It sets out fourteen basic principles of ethical conduct for executive branch personnel.  It becomes effective on February 3, 1993. (US Office of Government Ethics, 4/5/2016)

It states, in part: “An employee shall not use his public office for his own private gain, for the endorsement of any product, service or enterprise, or for the private gain of friends, relatives, or persons with whom the employee is affiliated in a nongovernmental capacity, including nonprofit organizations of which the employee is an officer or member, and persons with whom the employee has or seeks employment or business relations.” (US Government Publishing Office)